Hello Aaron,


Tuesday, September 23, 2008, 8:24:36 AM, you wrote:


>

I actually ran into a situation where I needed to concatenate LUNs last week.  In my case, the Sun 2540 storage arrays don't yet have the ability to create LUNs over 2TB, so to use all the storage within the array on one host efficiently, I created two LUNs per RAID group, for a total of 4 LUNs.  Then we create two stripes (LUNs 0 and 2, 1 and 3) and concatenate them.  This way the data is laid out contigously on the RAID groups.




Depending on your pattern use you could get sub-optimal performance. If you create smaller raid grups and match one lun to a given raid group and then use a zfs striping across luns you probably will get better performance.



-- 

Best regards,

 Robert                            mailto:[EMAIL PROTECTED]

                                       http://milek.blogspot.com

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